v. PLANTS WRIGHTIANiE. 47 



more in height. Leaflets half an inch long, obtuse, beset underneath, close to the 

 repand or subcrenulate margins, with a row of very large and flat glands, and often 

 with a few others near the midrib, petiolulate. 



127. D. MOLLIS, Benth. PI. Hartw. p. 306; var. 1 Neo-Mexicana : humilis, pube 

 sericeo-villosa canescens ; caulibus e radice perenni diff'usis herbaceis parce glandu- 

 losis ; foliolis 7-11 obovatis cuneatisve subretusis grosse glandulosis ; spicis oblongis 

 densifloris ; rhachi squarrosa ; bracteis lanceolatis subulato-acuminatis calycibusque 

 sericeo-villosissirais, dentibus e basi lata aristatis tubum et corollam subsuperan- 

 tibus ; carina purpurea petalis vix longiore ; legumine sericeo. — Hills beyond the 

 Pecos and the Pass of the Limpia ; Aug. — Stems much branched and diffuse, a 

 span high, often decumbent, leafy, clothed like both surfaces of the leaves with a 

 short and soft villous-silky cinereous pubescence. Leaflets an eighth of an inch 

 long, approximate, petiolulate. Spikes on short peduncles, half an inch or more 

 in length, thick and dense, very woolly with the silky-villous calyces. These and 

 the rest of the flowers are much as in D. lachnostachys, except that they are only 

 half the size or less, and the silky-villous covering is shorter in proportion and less 

 abundant. Mr. Wright notes that the flowers are yellow, at least in one set of 

 specimens ; but the carina in the specimens is tinged with purple. — Coulter's Cali- 

 fornian plant, to which I have joined the above, is smaller in all its parts, but, as the 

 whole structure is essentially the same, I think it may be no more than a starved 

 state of the same species. With more hesitation, on account of the larger size of 

 all the parts, I am constrained to append to it No. 126 also. 



126. D. MOLLIS, var. 1 villosior, minus canescens; foliolis spicisque majoribus; 

 calycibus magis plumosis. — On a mound near the San Felipe ; July. " Flowers 

 purple." — The larger leaflets are a quarter of an inch long, and the spikes over 

 half an inch in diameter, with perhaps a more copious villous-silky down ; I notice 

 no further difi"erence between it and No. 127. 



128. D. LANATA, Spreng. Syst. 3. j;. 327; Gray, PI. Fendl. p. 31. D. lanuginosa, 

 Nutt. Bottoms of the Rio Grande, New Mexico, 60 miles below El Paso ; Sept. 



129. D. ALOPECUROIDES, WUM. ; DC. Prodr. 2. p. 244; Gray, PI. Fendl. p. 3L 

 Valley of the Rio Grande, near Presidio de San Elisario, New Mexico; Sept. 



130. D. scoPARXA, Gray, PI. Fendl. p. 32. Sandy bottom of the Rio Grande be- 

 low El Paso ; Sept. — The excessively branched stems of this remarkable species 

 are woody at the base. The lower leaves are trifoliolate, with linear leaflets, the 

 lateral ones shorter than the terminal ; the uppermost are all unifoliolate as in the 

 specimens of Wislizenus. 



131. D. ARGYRJEA (sp. nov.) : fruticosa, erecta; ramis canescentibus glanduloso-tu- 

 berculatis foliosis; foliolis 7-13 obovato-oblongis argenteo-sericeis supra nitentibus 

 subtus glandulis nigris punctatis ; spicis brevibus densifloris ; bracteis ex ovato acu- 

 minatis calycibusque subsequilongis cinereo-pubescentibus ; dentibus calycis subulatis 

 tubo unguibusque petalorum brevioribus ; vexillo flavo alis carinaque purpureis sub- 

 duplo brevioribus ; legumine cum stylo hirsute. — High hills near the San Pedro 

 River, abundant; July. (San Antonio de las Alanzanes, Mexico, Gregg, No. 357. 

 Southern frontiers of Texas, Dr. Bigeloiv.) — Stems 1 to 2 feet high, stout, wholly 



